We still have no boot support for RISC-V, take the first step by
enabling barebox to detect a RISC-V Linux kernel image. The header
format is aligned with that of arm64.

Signed-off-by: Ahmad Fatoum <[email protected]>
---
 common/filetype.c  | 3 +++
 include/filetype.h | 1 +
 2 files changed, 4 insertions(+)

diff --git a/common/filetype.c b/common/filetype.c
index 539c96b74527..d89a5bcffea5 100644
--- a/common/filetype.c
+++ b/common/filetype.c
@@ -61,6 +61,7 @@ static const struct filetype_str filetype_str[] = {
        [filetype_kwbimage_v1] = { "MVEBU kwbimage (v1)", "kwb1" },
        [filetype_android_sparse] = { "Android sparse image", "sparse" },
        [filetype_arm64_linux_image] = { "ARM aarch64 Linux image", 
"aarch64-linux" },
+       [filetype_riscv_linux_image] = { "RISC-V Linux image", "riscv-linux" },
        [filetype_elf] = { "ELF", "elf" },
        [filetype_imx_image_v1] = { "i.MX image (v1)", "imx-image-v1" },
        [filetype_imx_image_v2] = { "i.MX image (v2)", "imx-image-v2" },
@@ -303,6 +304,8 @@ enum filetype file_detect_type(const void *_buf, size_t 
bufsize)
                return filetype_bpk;
        if (le32_to_cpu(buf[14]) == 0x644d5241)
                return filetype_arm64_linux_image;
+       if (le32_to_cpu(buf[14]) == 0x05435352)
+               return filetype_riscv_linux_image;
        if ((buf8[0] == 0x5a || buf8[0] == 0x69 || buf8[0] == 0x78 ||
             buf8[0] == 0x8b || buf8[0] == 0x9c) &&
            buf8[0x1] == 0 && buf8[0x2] == 0 && buf8[0x3] == 0 &&
diff --git a/include/filetype.h b/include/filetype.h
index 3019dda6ed78..cc97f0a6ba9f 100644
--- a/include/filetype.h
+++ b/include/filetype.h
@@ -43,6 +43,7 @@ enum filetype {
        filetype_kwbimage_v1,
        filetype_android_sparse,
        filetype_arm64_linux_image,
+       filetype_riscv_linux_image,
        filetype_elf,
        filetype_imx_image_v1,
        filetype_imx_image_v2,
-- 
2.29.2


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